Buff-throated woodcreeper 
Buff-winged cinclodes 
Buffy pipit 
Bullfinch 
Bullock's oriole 
Burchells starling 
Burmese Shrike 
Burnished-buff tanager 
Burnt-necked eremomela 
Caatinga cacholote 
Cabanis's spinetail 
Cactus canastero 
Cactus wren 
Calandra lark 
California Scrub Jay 
California Thrasher 
California towhee 
Campo troupial 
Canada jay 
Canada warbler 
Canarian Chaffinch 
Canary white-eye 
Canyon towhee 
Cape Batis